CC Sabathia has lost three straight decisions. Even worse the Yankees left-hander has given up at least seven runs in his past three starts.

Pitching coach Larry Rothschild admitted Sabathia’s recent bad run — including Friday’s start when he gave up seven runs in five innings — concerns him.

“Of course it does” Rothschild said before Saturday’s 1-0 loss to the Rays. “You don’t want him to worry about what he needs to do to be sharp and what’s going to happen next instead of just making pitches.”

The ace insisted he is OK physically after last year’s elbow surgery and Rothschild said he trusts Sabathia but can never be sure.

“Whether he’s fine or not he’s not going to say it” Rothschild said. “So you watch how he loosens up in between and if he tries to cut back on his side work. There are no signs of that.”

But Rothschild admitted Sabathia had ways around that.

“It’s hard to tell with him because he’ll even grind through side [sessions] knowing he’s being watched” Rothschild said. “But last year you could see a little difference. During games there would be a drop in velocity.”

That hasn’t happened much lately but did pop up following the second inning when Sabathia surrendered six runs.

“There was a little drop after the second but that’s normal because he had a heavy pitch load in that inning” Rothschild said. “There have been very few signs if any of him starting to have any problems health-wise.”